Colorado Ice

Thanks. I have been adjusting the TA to 120ppm or higher by instruction from my dealer. I'll try keeping the tA lower and see what happens with the ph after a week. CI

I have been maintaining a new hot tub for about one year. I have to adjust the ph and TA each time I check the water---once a week. The TA goes down to 75ppm and the ph goes above 8. Is it unusual to see fluctuations in ph and TA within a week? Can better stability be achieved? Here's my specs. I use a drop test type kit. Hot tub: 300 gal TA goal:120-150-ppm CH:250ppm ph goal: 7.2 Temp: 104F Sanitizer: chlorine and mineral sanitizer(Nature2) Spa shock and Enhanced shock 1-2 per week depending on use CI